Ergonomic gaming chair with removable head and haunch cushions. head and haunch cushions removable seat adjustable in height arm-rest adjustable in height and depth adjustable back angle of slope due to the "Butterfly" mechanism including tilt feature with lock mechanism 360° swivel chair rotation particularly comfortable cushioning certified:      SGS EN 1335-1:2000 (Type C)/EN 1335-2:2018/EN 12520:2015 and TUV Rheinland LGA Bauart gepruft according to DIN 4550:2004-12, Klasse 4 (DIN EN 16955:2017-08) (Self-supporting energized devices for the height adjustment of swivel chairs and armchairs; tube-type: E 018; drawing no. E 018; material: St 37-2 BK - DIN 2393; wall thickness: 2,5 mm; surface: QPQ treated) Dimension (chair / hxwxd) ca. 140 x 80 x 66 cm Dimension (star base / diameter) ca.   66 cm Dimension (chair-back / hxwxd) ca.   88 x 62 x 10 cm Dimension (seating area / wxd) ca.   58 x 50 cm Seating height ca.   47 - 55 cm Dimension (package 1 / hxwxd) ca.   90 x 63 x 17 cm (  7,88 kg) Dimension (package 2 / hxwxd) ca.   83 x 67 x 32 cm (23,72 kg) Weight (product/overall) ca.   23,87 / 28,21 kg Strain max. 180 kg Material chair: metal / plastic cushion: rigid foam cover: PU leather Mark of conformity SGS EN 1335-1:2000 (Type C)/EN 1335-2:2018/EN 12520:2015 and TUV Rheinland LGA Bauart gepruft according to DIN 4550:2004-12, Klasse 4 (DIN EN 16955:2017-08) (Self-supporting energized devices for the height adjustment of swivel chairs and armchairs; tube-type: E 018; drawing no. E 018; material: St 37-2 BK - DIN 2393; wall thickness: 2,5 mm; surface: QPQ treated) Colour seat cover: white / black stitching: black Barcode 4260070127502 Manufacturer code LC-GC-800BW